... rambending 滑块挠度 ramble 煤层顶板页岩 ramblerrose 蔓性种蔷薇 ...
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煤层顶板页岩
Roof shale
以上为机器翻译结果,长、整句建议使用 人工翻译 。
煤层顶板覆岩一般以页岩、砂岩、灰岩等沉积岩为主,其物理力学性质差异很大。
The overlying strata of the coal bed roof are dominated by sedimentary rocks such as shale, sand stone and limestone, whose physical and mechanic properties differ greatly.
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